Supporting base for relays or other electrical units



Sept. 16 1924. 1,508,744

J. o. CARR ET AL SUPPORTING BASE FOR RELAYS OR OTHER ELECTRICAL UNITStil-ed Juno 8. "21

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Patented-Sept. 16, 1924.

UNITED STATES PATENT- OFFICE.

JOHN O. CARE AND HOWARD L. KRUM, OF CHICAGO, ILLINOIS, ASSIGNOBS TO MOR-KRUM COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION.

SUPPORTING BASE FOR RELAYS OR OTHER ELECTRICAL UNITS.

Application filed .Tune 8, 1921. Serial No. 475,939.

.To all whom it may concern:

Be it known that we, JOHN O. CARR and HowARn L. KRUM, both citizens ofthe United States, residing at Chicago, in the county of Cook and Stateof Illinois, have invented certain new and useful Improvements inSupporting Bases for Relays or Other Electrical-Units, of which thefollow ing is a specification.

lhis invention relates to supporting bases for relays or otherelectrical units but more particularly to the slip base type and has forits primary object to provide a new and improved structure which willenable the relay to be more quickly and easily connected to anddisconnected from the fixed terminals.

Further objects of our invention are to provide an'advantageousinterlocking connection between the bracket and the relay to preventinjury to the parts when the relay is being connected or disconnected,to

protect the-clips and wiring of the bracket and relay, and to provide animproved mounting for the insulating member carrying the clips on thebracket. I

The many other objects and advantages of the present invention will bebetter understood by reference to the following specification whenconsidered in connection with the accompanying drawings illustrating aselected embodiment thereof, in which Fig. 1 is a side elevationpartially in.

section of the relay complete with the parts in the first position ofassembly.

Fig. 2 is a partial central vertical section with the parts completelyassembled.

Fig. 3 is a plan view'of the connecbracket. p r t is a bottom plan viewof the relay.

Reerring the drawings, a connection ded with inwardly project- 9comprises a rectangular ing perforated lugs 13' to enable the same to besecured by screws or other similar means upon a table. An integral web14 connects the side members of this frame. A clip support 15 of fibreorother suitable insulating material is secured upon this web by screws16. A plurality of resilient clips 18 are secured upon the support 15 bymeans of screws 19 before the support is attached to the web and theheads of these screws are preferably countersunk in the under face ofthis support. A thin strip 14 of insulating material is interposedbetween the web and the clip support to protect the countersunk heads ofthe screws 19. The outer end 20 of each of the clips 18 preferablyprojects beyond thc'corresponding edge of the support and is providedwith a perforation or slot to permit a terminal wire 21 to be connectedthereto. An upright guard plate 22- is preferably formed on the rearedge of the frame 12 to protect these terminals. Each of the sidemembers of'thc frame 12 is provided with ail-upwardly proj ecting flange23 on which is formed an outwardly projecting stud 24;. lhe upper edgeof this flange is preferably above the level of the clips to act as aprotector for these clips when the relay is detached therefromi Therelay 11 comprises a suitable frame 11 coils 11 and contacts 11. Theseparts are mounted on a base 11 and enclosed by a removable cover 11 Thebase 11 com-' prises a base plate 25 having a depending flange 26extending along its Iront and side edges. This flange preferablyprojects beneath the other parts of the relay to pro tect the or ps andterminals. The side portionsof this flange 26 are provided withoppositely disposed L-shaped slots 27 coinmunicating with the bottomedge of the flange and adaptedto interlock with the corresponding studs24 on the brackets 23 to form a detachable connection between the relayand thebraclrct. The bottom edge of the flange 26 rests on the frame 12when the relay and bracket are in their assembled position. The sidemembers of this frame 12 and the flanges 23 form guides for the relayduring the assembling operation, as will be more fully set forthhereinafter. fr clip support 28 preferably of fibre is socured on raisedshoulders 29 on the under face of the base plate 25 by screws 29 and aplurality of rigid clips 30 are attached to til this support by screwsin the same manner as the clips 18 on the support 15. The outer ends 31of these clips 30 project beyond the corresponding edge of the bar 28and'the variousrelay conductors 32 connect these clips with the relaycoils and con= tacts. 4

-A strip 25' of insulating materialis pref erably interposed between thesupport 28 and the shoulders 29 to protect the countersunk heads ofthescrews 29. ends 33 of the clips 30 are bent downwardly to engage theunder face of corresponding ends 34 of the clips 18 and force these ends34 upwardly, as the relay is moved into its assembled position. Theposition of the clips 18 prior to engagement with the clips 30 isindicated in dot in Fig. v2. These clips 18 should preferably be ofstiff spring metal in order to "insure the proper contact with theirrespective rigid clips.

To mount the relay upon the bracket, it is first held in the relativeposition indicated in Fig. 1 of the'drawings, with the open ends of theslots 27 directly above the corresponding studs 24. The relay is thenpressed downwardly to. bring the studs and slots into the relatlveposition indicated in Fig. 6. In this position, the inner faces oftheside portions of the flange 26 fit closely against the correspondingouter faces of the flanges 23 and the bottom edges of these sideportionsrest upon the side members of the frame 12. The relay is then slidrearwardly until the studs reach the'ends of their respective slots 27During this rearward movement, the relay is 'guidedby the side membersof the frame 12 acting as tracks,

.and by'the flanges 23. The relay is held in studs in the slots and itis desirable that engagement with these'side members by the these studsfit closely their respective slots to prevent any upward movement of there lay resulting from the engagement of the clips.

.To remove the relay, it is drawn forwardly on its guides until thestuds 2-1 strike thecorresponding shoulders 38 at the end of 'ments.

the horizontal ,portions of the slots 27, as

indicated in Fig. 6' of the drawings. The relay :is then lifted towithdraw the studs from the slots. The connecting of the relay isaccomplished 'by successive vertical and horizontal movements.- Thedisconnection is performed by a'reversal ofthese move- On account ofthe'resistance produced by the premure of the clips 18 on the clips'30,considerable force must be exerted to disengage these parts andthesudden release of the relay while subject to this force would be liableto cause injury to the parts of the relay or the bracket if theirrelative movement was not limited and controlled. T'he clips 18 aredrawn entirely clear of the clips 30 before the studs 24 permitthe re-The inner lay to be raised. This is important as it prevents distortionof the flexible clips which would subsequently result in imperfectcontact between the clips.-

The web 14 connecting the side members of the bracket frame greatlystrengthens the insulating support 15 as this support may be attachedthereto at short intervals. The clips are preferably cut away at 40 toadmit the heads of the screws 16 therebetween.

It will therefore-be readily evident that the relay may be quickly andeasily connected to or disconnected from the connec- The insulatedsupports for the 'We are aware that many changes may be made in the formand arrangement of the various parts without departing from the spiritof our invention, and we reserve the 'right to make all such as fairlyfall within the scope of the following claims.

We claim as our invention:

1. In combination, an electrical apparatus, a supporting base therefor,a table bracket, and cooperating sets of connector clips mountedrespectively on said base and bracket and adapted to be engaged by therelative horizontal movement of said parts, said base and bracket havingcooperating lugs and grooves for preventing relative vertical movementof said parts when said connector clips are engaged.

2 In combination, an electrical apparatus, a supporting base therefor, atable bracket, cooperating sets of connector clips mounted respectivelyon the lower face of said base and upon the upper face of said bracketand adapted to-be engaged by the relative horizontal movement of saidparts, said base and bracket having cooperating portions for ghiding therelative horizontal movement thereof and-having cooperating lugs andgrooves for preventing the relative vertical movement thereof when saidconnector clips are engaged.

3. In electrical apparatus, a fixed bracket, a unit separate from saidbracket and-having a base plate provided with depending side flangesadapted to' fit over corresponding upright flanges on L-shaped slots insaid unit flanges adapted to receive outwardly projectin studs on saidbracket'flanges to form a locking ensaid bracket,

1,,isoaraa gagement between said base and said unit,

and connection clips on said bracketadapted to engage correspondingclips on said unit.

4. In electrical a paratus, a fixed bracket provided with para lel,upright side flanges, a unit separate from said bracket and having abase plate provided with depending side flanges fitting correspondingside flanges on said bracket, an elongated stud on each of said bracketflanges co-acting with a corresponding substantial L-shaped slot in theopposing unit flange to form a locking engagement between said unit andsaid bracket, and connection clips on said bracket engagingcorresponding'clips on said unit when sald bracket and said unit are intheir locked position.

5. In electrical apparatus, a fixed bracket provided with parallelupright side flanges, a unit separate from said bracket and having abase plate provided with depending side flanges fitting over thecorresponding side flanges on said bracket, L-shaped slots in each ofthe side flanges of said unit com municating with the bottom edgethereof, elongated studs on the outer faces of said base flanges adaptedto enterthe corresponding slots in said unit and be advanced there in bysuccessive vertical and horizontal movements of said unit relative tosaid base to form a locking connection between said unit on said base,guides on said basefor directing the horizontal movement of said unit,and connection clips on said bracket engaging corresponding clips'onsaid unit when said bracket and said unit are in their locked position.

6. In electrical apparatus, prising a frame, a clip support on saidframe, connection clips secured on said support and having theirterminal ends pro-.

jecting beyond the corresponding-side edge 7 thereof, and a guard platedisposed opposite to said ends.

7 In electrioalapparatus, a bracket comprising a frame, a web formedintegral with said frame and connecting the side members thereof, a clipsupport extending longitudinally of said web and secured thereto atshort intervals, connection clips secured on said support and havingtheir terminal ends projecting beyond the corresponding side edgethereof, and a guard flange on said frame extending longitudinally ofsaid supa bracket comport opposite to the terminal ends of said clips.

8. In combination, an electrical appara tus, a supporting base therefor,a table bracket, cooperatin sets of connector clips mounted respectiveiyon the lower face of said base and on the upper face of said bracket andadapted to be engaged by the relative horizontal movement of said parts,said base having depending side flanges extending downward below theconnector clips thereon, and said bracket having means cooperatingwithsaid flanges to guide the horizontal movement of the base thereon.

' 9. In combination an electrical apparatus, a supporting base therefor,,a table bracket, cooperating sets of clips iiounted respectively on theunder side of saidbase and on the u per side of said bracket and adaptedto be engaged by the horizontal movement of said base oil said bracket,said base and bracket having side flanges for guiding the horizontalmovement of said base and between which flanges the corresponding setsof clipsare arr-an ed.

10. In electrica apparatus, a bracket member, aunit member, a series ofhorizontally disposed connection clips on each of said members arrangedto be engaged with the corresponding clips on the other member byrelative horizontal movement of said members, the, unit clips underlyingthe bracket clips and retaining said unit member firmly in place uponsaid bracket, and shaped slots onone of said members engagingcorresponding lugs on the other member to prevent relative verticalmovement of said members except when the connection clips aredisengaged.

11. In combination, an electrical apparatus,- a supporting basetherefor, a table bracket, two horizontally arranged sets of connectorclips mounted respectively on the under side of said base and the upperside of said bracket and adapted to be engaged by the horizontalmovement of said base on said bracket, said base and bracket having sideflanges for protecting said connector clips and said flanges havingcooperating lugs and grooves for preventing the vertical movement ofsaid base when said connector clips are engaged.

JOHN O. CARR. HOWARD L. KRUM.

